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Confidence Rationale: Potential vulnerability identified through indirect indicators requiring further validation |
Key Findings: |
- 3 critical vulnerabilities identified |
- 2 high risk issues found |
- System configuration needs hardening |
Recommendations: |
1. Implement TLS 1.2+, encrypt data at rest using AES-256, and minimize data collection. Review OWASP Cheat Sheet for this vulnerability type and implement defense-in-depth controls. |
2. 1. Disable SMBv1 protocol completely 2. Apply all Windows security updates immediately 3. Restrict SMB access to authorized networks only 4. Enable SMB signing to prevent man-in-the-middle attacks Review OWASP Cheat Sheet for this vulnerability type and implement defense-in-depth controls. |
3. Configure SQL Agent to run under least privileged account. Enable job step security. Conduct privilege audit using tools like BloodHound for AD or LinPEAS for Linux. Implement just-in-time access controls where possible. |
Next Steps: |
- Address critical vulnerabilities within 24 hours |
- Remediate high risk findings within 7 days |
- Schedule retesting after fixes are implemented |
- Conduct developer security training focusing on OWASP Top 10 |
--- END REPORT --- |
=== Automated Penetration Test Report === |
Test ID: PT-2025-05-11-0004 |
Date: 2025-05-11 19:07:18 |
Tester: rjohnson |
Organization: SecureNet Solutions |
Confidentiality: STRICTLY CONFIDENTIAL |
Test Objective: conduct a comprehensive security assessment of the BIND DNS server (10.97.116.218) |
Scope: Internal security assessment |
Rules of Engagement: Standard |
=== Discovery Phase === |
Tester: nmap -sV -O --script=dns-recursion -p53,953 10.97.116.218 |
Tool Output: |
Starting Nmap 7.92 at 2025-05-11 19:07:18 |
Nmap scan report for 10.97.116.218 |
Host is up (0.31s latency). |
MAC Address: 54:52:AA:4C:B3:AC (Amazon) |
53/tcp open domain ISC BIND 9.16.1 |
953/tcp open rndc ISC BIND 9.16.1 (remote name daemon controller) |
| dns-recursion: |
| Recursion appears to be enabled |
|_ Potential DNS amplification vulnerability |
OS details: Linux 4.15.0-112-generic |
OS CPE: cpe:/o:linux:linux_kernel:5.4 |
Service Info: Host: ns1.internal.corp; Domain: internal.corp |
Nmap done: 1 IP address (1 host up) scanned in 7 seconds |
=== Vulnerability Assessment === |
Tools used: |
- Nmap with dns-nsid and fpdns scripts |
- ISC BIND vulnerability checks |
- DNS reconnaissance tools (dig, dnsrecon) |
## Vulnerability 1: CVE-2021-25216 (SIG record parsing DoS) |
CVE: CVE-2021-25216 |
CVSS Score: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (7.5) |
Primary Tool: Nmap dns-nsid script |
Test Method: nmap -sU -p53 --script=dns-nsid 10.97.116.218 |
Result: |
BIND 9.16.1 is vulnerable to denial of service via specially crafted SIG records. |
Attackers could crash the named process by sending malformed SIG records. |
Remediation: Upgrade to BIND 9.16.24 or later. Apply ISC patch for CVE-2021-25216. |
## Vulnerability 2: CVE-2019-6477 (NXDOMAIN cache poisoning) |
CVE: CVE-2019-6477 |
CVSS Score: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N (5.9) |
Primary Tool: Manual testing with dig |
Test Method: dig @10.97.116.218 +short porttest.dns-oarc.net TXT |
Result: |
Server vulnerable to NXDOMAIN cache poisoning attacks due to insufficient |
randomization of query IDs when processing NXDOMAIN responses. |
Remediation: Upgrade to BIND 9.16.24 or later. Set 'nxdomain-redirect no;' |
=== Exploitation Phase === |
Tool: Metasploit Framework 6.1 |
Command: msfconsole -q -x "use auxiliary/dos/dns/bind_nxdomain; set RHOSTS 10.97.116.218; exploit" |
Output: |
[*] Sending NXDOMAIN cache poisoning packets to 10.97.116.218:53 |
[+] Target appears vulnerable - malformed NXDOMAIN responses accepted |
[*] This could allow cache poisoning but no direct shell access |
Tool: dig (manual cache poisoning test) |
Command: dig @10.97.116.218 +short porttest.dns-oarc.net TXT |
Output: |
;; Warning: ID mismatch: expected ID 12345, got 54321 |
;; Warning: query response failed verification |
Result: Inconsistent query ID generation detected |
Analysis: |
- Confirmed NXDOMAIN handling vulnerability (CVE-2019-6477) |
- Confirmed SIG record parsing vulnerability (CVE-2021-25216) |
- No direct remote code execution possible |
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